Hair and Makeup

I have reached out a few hair stylists and makeup artists and I'm fairly certain which team I will be going with so earlier today I sent a message to everyone getting ready with me in the morning about the cost should they chose to have their hair and makeup done. I assured them it was 100% optional so there was no pressure. My future mother-in-law planned on getting ready with us so she was included in the group message. Based on the information I was provided, it would be $75 for hair and $65 for makeup. This was the second cheapest option based on all of the hair stylists and makeup artists I spoke with. I was planning on going with them because I liked them the best out of everyone I spoke to. My future mother-in-law was stunned that they cost so much. She is the only one that's upset with what prices I was quoted. My future sister-in-law (her step-daughter) thought the pricing was really good and she's been in so many weddings we have joked she's like the girl in 27 Dresses. My fiance has tried reassuring me that his mom is used to having her hair done at Walmart so she has no clue what it costs to have her hair done for a wedding. She also doesn't ever wear makeup so she wouldn't know what to expect with that either. She's now saying she isn't getting ready with me because the costs for hair and makeup are way too much and she wants her hair and makeup done by a professional so she's going somewhere else. I feel terrible, but I'm not sure what to do. I don't have any control over the costs, but we are already paying for this wedding on our own that I don't have the extra money to pay for her hair and makeup just because she's angry about the costs. Do these costs seem reasonable or should I keep looking? What would you do if you were in my position and your future mother-in-law was angry with you about costs for hair and makeup?