Hey guys I have a question I asked my mom to babysit my girls their 2 and 6 months so me and my…

Hey guys I have a question I asked my mom to babysit my girls their 2 and 6 months so me and my husband and my two older kids can go to the movies to see Wonder Woman which was a really cool movie.. anyway my mom had asked me when would we be back to come pick up the girls basically giving me a time limit she never wants to watch them because apparently they're too much to handle my mother is 56 years old and it's always a problem my husband's grandmother is 84 and she has watched them before with my two older children with her but because it was just the little ones I didn't want her to have to run around chasing a two year old anyway me and my husband dropped off my two older kids so they can go swimming with my sister my niece and nephew usually I will call her and say hey we're going to be late to come get the girls but because it was the 4th of July my husband just got a four-wheeler and wanted to take me on a ride because we're never alone together the last time we were alone was our anniversary last year in November we haven't had a date night since that's why he wanted to bring me on the 4-wheeler the movie started at noon we got to my moms around 4:30 the movie was also two and a half hours long because I got there the time that I did she started running her mouth and was talking shit about my husband's grandmother in front of him it took everything he had for him not to say anything and respect for me I feel really bad and I feel like he should have said something because my mother enjoys pitty and is always lazy I never depend on my mother for anything because she is the most unreliable person I've ever met my life I know it's wrong to talk like this about your own mother but she's a perfect example of a mother I would never want to be am I wrong for feeling this way and should I have let my husband say something?