Hi there, can you give me an example of which links you’re referring to specifically? Links within your posts and pages should show a dotted underline when you roll over them, like this:

Are you referring to links in the menu bar, or links in the sidebar widgets, like your Blogs to Love list?
Also just a heads-up that if you’d like to make tweaks to your links – or other modifications to your site’s CSS code – you’ll need the Custom Design upgrade, which can be purchased in your dashboard’s Store:
https://thewellnessgirldotnet.wordpress.com/wp-admin/paid-upgrades.php
This upgrade also includes the ability to use custom fonts from our collection, as well as custom colour palettes.
Just let me know what you decide and I’ll be glad to help further.