Apparently she didn’t have that in mind, but she’s OK with ardent fans and self-proclaimed “Rizzles,” who want to see the women romantically linked.
2016, Lucia Scott, "They Won't: Analyzing Queerbaiting and Compulsory Heterosexuality in Popular Television", thesis submitted to Baylor University, page 25:
Quite a few pop culture pieces about the show discuss “Rizzles,” a name the fan base created for a hypothetical Rizzoli-Isles pairing.
R&I producers have commented that they did not intend to depict sexual tension between Jane and Maura, and stated or strongly implied that the pairing would never become romantic, but they have also revealed an intent to encourage the hopes of Jane/Maura (or "Rizzles") fans.
2019, Liselot Jacobs, "The Power of Representation: Rethinking Sexuality and Challenging Heteronormativity in Rizzoli & Isles Fan Videos", thesis submitted to Utrecht University, page 5:
Finally I want to contribute to both academic fields by analyzing three fan videos created by fans from the Rizzles fandom.