Names related to Wendy?

Okay, so we are struggling with middle names. This is our first baby and we're not finding out the sex. If it's a girl, my husband's mom's name (Ruth) works well with our first choice girl name. We are planning on having two, maybe three kids. I'm worried that if we use his mom's name for this baby's name (if it's a girl) and then have another girl, my mom would be offended if we didn't use her name for that baby's middle name - but I despise the name Wendy! Are there any names that are related to Wendy that sound better? I can't think of any! Or creative ideas? Thanks!