MIL has been staying with us for half term to help out with the DCs. She's been wonderful and they've adored her being here. DH is setting up his own company and MIL has been very much against this since the start. DH viewed some potential new premises this week and has been interviewing some potential new starters. Things seem like they're falling into place and he's really excited. My parents are planning on investing (they are mortgage free, have investment properties and work as part-time consultants in their respective lines of work). DH has spoken to PIL about investing (mortgage free, investment properties and money in the bank from sale of business) but they are non-committal.
MIL has been sitting here in a strop all afternoon since DH got back from an informal chat with an ex-employee who'd like to work for him. Having this person on board would make DH's new company almost twice as productive in the first year. The reason DH had a meeting today is because this person has just been promoted and they needed to discuss finances and dates. The only thing MIL has said is "well you're going to need more than £xxk then aren't you". When DH was talking about the potential new premises she just said "it doesn't sound like its going to work out with that one" simply because DH hasn't had a reply from the landlord from an email he sent yesterday.
I am not bothered about PIL investing on DH's company, yes it will make it more difficult financially, and we'll have to borrow more from investors and the bank, but there's so much negativity about him starting his own business (balanced with the argument "you've been at your current place long enough" 
) that it's really getting me down.
She keeps saying how she's worried we'll lose the house and we and the DC will be homeless (obviously we've done our sums and budgeted things out. We're not stupid) but she doesn't actually want to help out at all to try and stop this scenario from happening. I really don't care about her money, I'm confident we can get enough backing from investors but her attitude is really pissing me off. She's been so lovely all week. The minute DH starts talking about his new business venture she just starts sulking. I cooked dinner, called them both from the living room in to the kitchen to sit down. DH and I were at the kitchen table for 5 mins waiting and she didn't join us until he went in to the living room to ask her if she wanted to eat (despite seeing me dishing up right after I'd asked them to sit down for dinner) . Then she came in and if was all one word answers during dinner and all night. She's just gone up to bed and I can hear her stomping around and slamming the toilet seat (wtf is that about?!). I hope she doesn't wake the DC.
I really want to ask DH to categorically tell her he doesn't want her to invest but I'm worried about his reaction. He's really stressed at the moment with his business plan etc. Its pushing our relationship and my relationship with MIL was a bit rocky until about a year/18m ago and he doesn't take any perceived "criticism" of MIL very well. I'm just so bloody pissed off that she can't provide even a little bit of moral encouragement. It all seems to he about money to her. She's not ungenerous. She always splashes out on us and the DC but I think she feels like she has to invest as my parents are. My parents have told us (and her) that they consider the investment almost like giving us our inheritance early and I think MIL feels inadequate (she previously told me she felt inadequate as my mum knitted the DC some jumpers when they were babies and she can't knit so can't do the same ).
Sorry for long post. AIBU to feel this way and should i say something to DH or even MIL?