Should I push my daughter to see and date guys?

My daughter has been depressed since her good friend passed away a few months ago. She’s on and off about liking guys because she feels like she’s ‘betraying’ her friend and her heart. She did date a guy for about a week and then broke it off suddenly without any warning. I thought he was a super nice guy and I honestly don’t know what happened. I want her to get out and meet and interact with guys. She’s living a very unhealthy lifestyle and it’s actually causing some concerns. She doesn’t like hanging out with friends, she spends all her time talking to people online and I’m not very happy about it. The last thing I want to see is my daughter alone. I mean it’s been almost eight months since her friend passed away. Is this a normal grieving process, or no? Also, she has very, very high standards. If a guy doesn’t meet all of her standards, she basically shuts down and doesn’t like them anymore. Do you have any suggestions? She’s 17.