The AOL anti spyware programme is based on Spyware Eliminator. click here for details. The three anti spyware programmes your friend have are probably the best. I've been running the AOL anti spyware programme and it throws up a false positive in respect of one particular programme but, beyond that, it functions well enough and is simple to use.
She will need her own anti virus programme as the AV that is offered by AOL only scans emails.
The firewall from McAfee blocks incoming and outgoing traffic whereas the windows firewall only blocks incoming traffic. Once you set it up, you can forget about it, and it doesn't affect performance, not with me at least.