Helping my best friend insert her tampon

Okay I love my best friend. We’ve been friends for about 8 years. We’re going on vacation soon and she says she’s supposed to come on while we’re on vacation. She mentioned that she wanted to use a tampon for the first time so she can still swim and stuff and asked if I could help her insert it. Just thinking about it makes me cringe because blood freaks me out a bit. Is it weird for her to even ask me to help her with this task? Is this normal?? Any advice?