Hi new here and need some help

Hi everyone never thought i'd be sat reading through a divorce forum but hey ho i suppose no body would.
here goes
Been with the wife for 20 year been married for not quite 2 year , she's had a few affairs that i know of but the last straw was after we wed , we have 2 girls aged 16 and 11, been in the marital home for about 3 year (mortgaged solely in my name)
i have left the marital home 2 months ago when i discovered the affair, divorce / solicitors in motion, now the house has been on the market for about 4 weeks as i have a large mortgage i had to move quick , its obvious that i cannot pay the mortgage and live elsewhere , she only just now works part time so her monthly wage is about half of the mortgage, so a sale is the only option.commnication has broken down past all recognition even by phone , now the few viewing we have had have all been wrecked so she can stay in the marital home, moving back in is NOT an option it would make war of the roses look like a fairytale seriously. we originaly agreed that she could keep the home contents and i keep my car but i cannot keep paying the mortgage and live elsewhere and she won't allow a viewing or makes catch 22 huh , the eldest child has already been poisend against me the youngest is contact with me everyday.There's probably about £30k left in equity after legal fees in the house to which we agreed to split 50/50 but since communication has broken down she's thinking if she wrecks the viewings then she gets the stay there for good, she has a new guy already staying there , no wasting time huh, anyway its day to day texts and threats now i can't see a way out of this apart from letting it get repossesed then we both lose, i mentioned that to her and got a reply of "whatever" i paid 18k deposit on the house before we where married (dunno if that stands for anything) but would be nice to get something back from this mess.
any help or advice greatly appreciated.

Hi,
New too!!
Have no advice regards the house, just.... do the best for the children...... my stbx refusing to assist me in keeping the family home, havent taken any advise as of yet but really need and want the children to remain in the family home as it offers security for them. I work full time so he says i should take a smaller house and i can then be rid of him!
Makes no sense sorry..
messed up 2

Hi its late didn't want my post to sound like i'm not bothered about kids etc , i'll never turn my back on the kids my 11 year old wants to live with me and thats fine with me a million lies have been told and made me to be the bad guy and thats putting it mildly stuff i don't wanna go in to , but my kids will always be my kids unlike adolf the wife not the name on her passport , i never saw this coming and never imagined things could get so bad so quick , just a glimmer of the light and the end of the tunnel would do , i really can't work her out nor can i see a way of sorting this out.